[Asterisk-Dev] IAX2 trunk really should send timestamps as part of iax2_meta_trunk_entry..

[steve at daviesfam.org]

On Sun, 6 Feb 2005, Steve Underwood wrote:

> OK. Think more than plesiochronous. Think plesiochronous digital 
> heirarchy :-) Because the streams are plesiochronous (unless one of the 
> sources has a really screwy clock), you can just encode how much ahead 
> or behind the group an individual stream is, which is a tiny value. That 
> is basically how PDH does it.

My understanding of the problem was that there were "phase" differences 
between the clocking of the trunk and the clocking of the contained calls.  
This "phase" gets thrown away by the current trunking implementation, so 
the call timestamps get decimated down to 20msec accuracy.

So at first glance that's all you reall need to include - 5 bits per call.

Steve